/* :root根伪类--为自定义CSS属性方便我们重复使用同一个属性自定义属性使用var()进行定义*/
:root {
  /* 背景颜色 */
  --white: #e9e9e9;
  --gray: #333;
  --blue: 口 #0367a6;
  --lightblue: 口 #008997;
  /*外边框圆角属性*/
  --button-radius: 0.7rem;
  /* 登录注册框的大小 */
  --max-width: 758px;
  --max-height: 420px;
  /*字体样式*/
  font-size: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
  align-items: center;
  background-color: #e9e9e9;
  /*background: url(home4.jpg);*/
  background-attachment: fixed;
  /* */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  display: grid;
  height: 100vh;
  place-items: center;
}

.from_title {
  font-weight: 300;
  margin: 0;
  margin-bottom: 1.25rem;
}

.link {
  color: rgb(90, 105, 238);
  font-size: 0.9rem;
  margin: 1rem 0 0 0;
  text-decoration: none;
}

/* 注册框 */
.container {
  margin-bottom: 100px;
  background-color: var(--white);
  border-radius: var(--button-radius);
  box-shadow: 0 0.9rem 1.7rem rgba(0, 0, 0, 0.25);
  height: var(--max-height);
  max-width: var(--max-width);
  overflow: hidden;
  position: relative;
  width: 100%;
}

.container_from {
  height: 100%;
  position: absolute;
  top: 0;
  transition: all 0.6s ease-in-out;
}

/* 登录框 */
.container_signin {
  /*控制登录界面移动 */
  left: 0%;
  width: 50%;
  z-index: 2;
  /*控制移动顺序 */
}

#rup {
  margin-right: 2rem;
}

.container .right-panel-active .container_signin {
  transform: translateX(100%);
}

.container_signup {
  left: 0;
  opacity: 0;
  width: 50%;
  z-index: 1;
}

.container.right-panel-active .container_signup {
  animation: show 0.6s;
  opacity: 1;
  transform: translateX(100%);
  z-index: 5;
}

.container_overlay {
  height: 100%;
  Left: 50%;
  overflow: hidden;
  position: absolute;
  top: 0;
  transition: transform 0.6s ease-in-out;
  width: 50%;
  z-index: 100;
}

/* 设置左右透明 移动 */
.container.right-panel-active .container_overlay {
  transform: translateX(-100%);
}

.overlay {
  background-color: var(--lightblue);
  background-color: #008997;
  /*background: url(home4.jpg);*/
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  height: 100%;
  left: -100%;
  position: relative;
  transform: translateX(0);
  transition: transform 0.6s ease-in-out;
  width: 200%;
}

/* 左边页面透明 移动 */
.container.right-panel-active .overlay {
  transform: translatex(50%);
}

.overlay_panel {
  align-items: center;
  display: flex;
  flex-direction: Column;
  height: 100%;
  justify-content: center;
  position: absolute;
  text-align: center;
  top: 0;
  transform: translateX(0);
  transition: transform 0.6s ease-in-out;
  width: 50%;
}

/* 控制按钮移动  transform:translate(x,y)属性*/

/* 跳转到登录界面 */
.overlay_left {
  transform: translateX(-5%);
}

.container .right-panel-active .overlay_left {
  transform: translateX(0);
}

/* 跳转到注册界面 */
.overlay_right {
  right: 0;
  transform: translateX(0);
}

.container .right-panel-active .overlay_right {
  transform: translateX(20%);
}

/* 设置按钮 */
.btn {
  background-color: skyblue;
  background-image: linear-gradient(to right, skyblue, pink 65%);
  border-radius: 5px;
  margin: 0;
  border: 1px solid skyblue;
  color:#222831;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: bold;
  letter-spacing: 0.1rem;
  padding: 0.9rem 4rem;
  /* 过渡的时间还有样式 */
  text-transform: uppercase;
  transition: transform 80ms ease-in;
}

form>.btn {
  margin-top: 1.5rem;
}

/* 鼠标放上去让按钮缩小 */
.btn:hover {
  transform: scale(0.95);
}

/* 设置点击没有边框 */
input:focus {
  outline: none;
  border: 1px solid skyblue;
}

/* 登录表单 */
.from {
  background-color: var(--white);
  display: flex;
  align-items: center;
  /*justify-content 用于设置或检索弹性盒子元素在主轴（横轴）方向上的对齐方式。 */
  justify-content: center;
  /*  flex-direction: column; 垂直显示 */
  flex-direction: column;
  padding: 0 4rem;
  height: 100%;
  text-align: center;
}

/* 输入账号密码框样式设置 */
.input {
  background-color: #fff;
  border: 1px solid white;
  padding: 0.9rem 0.9rem;
  margin: 0.5rem 0;
  width: 100%;
  border-radius: 20px;
}

@keyframes show {
  0%,
  50% {
    opacity: 0;
    z-index: 1;
  }

  50%,
  100% {
    opacity: 1;
    z-index: 5;
  }
}
